1生产中常见的5种肥害情况1.1在深翻土壤和深开沟施肥时,有机肥的肥块过大或施用过于集中,或有机肥没有经过发酵腐熟,造成烧灼树根。这种情况在无水浇灌条件的果园中,耕层深20cm上下的浅土层出现较多。1.2过多、过量或过于集中地施用尿素、硝酸钾、硫酸铵、碳酸氢铵等速效化肥,造成灼烧树根。灼烧的根系成褐色,须根、细根先 1 common in the production of five kinds of fertilizer 1.1 In the deep turning the soil and deep ditching fertilization, organic fertilizer is too large or too concentrated fertilizer, or organic fertilizer has not been fermented and decomposed, resulting in burning roots. This situation in the water conditions irrigated orchard, 20cm depth of shallow layer of soil appear more. 1.2 Too much, excessive or too concentrated application of urea, potassium nitrate, ammonium sulfate, ammonium bicarbonate and other quick-acting fertilizers, burning roots. Burning roots into brown, fibrous roots, fine roots first